DM9102A
Single Chip Fast Ethernet NIC controller
0= Normal Operation
0.6:0.0
Reserved
<0000000>,
RO
Final
Version: DM9102A-DS-F03
August 28, 2000
43
Reserved. Write as 0, ignore on read
Basic Mode Status Register (BMSR) – 1
Bit
1.15
Name
Default
0,RO/P
Description
100BASE-T4
100BASE-T4 Capable:
1=DM9102A is able to perform in 100BASE-T4 mode
0=DM9102A is not able to perform in 100BASE-T4 mode
100BASE-TX FULL DUPLEX CAPABLE:
1= DM9102A able to perform 100BASE-TX in Full Duplex mode
0= DM9102A not able to perform 100BASE-TX in Full Duplex mode
100BASE-TX Half Duplex Capable:
1=DM9102A is able to perform 100BASE-TX in Half Duplex mode
0=DM9102A is not able to perform 100BASE-TX in Half Duplex mode
10BASE-T Full Duplex Capable:
1=DM9102A is able to perform 10BASE-T in Full Duplex mode
0=DM9102A is not able to perform 10BASE-T in Full Duplex mode
10BASE-T Half Duplex Capable:
1=DM9102A is able to perform 10BASE-T in Half Duplex mode
0=DM9102A is not able to perform 10BASE-T in Half Duplex mode
Reserved:
Write as 0, ignore on read
MII Frame Preamble Suppression:
1=PHY will accept management frames with preamble suppressed
0=PHY will not accept management frames with preamble suppressed
Auto-negotiation Complete:
1=Auto-negotiation process completed
0=Auto-negotiation process not completed
Remote Fault:
1= Remote fault condition detected (cleared on read or by a chip reset). Fault
criteria and detection method is DM9102A implementation specific. This bit will
set after the RF bit in the ANLPAR (bit 13, register address 05) is set
0= No remote fault condition detected
Auto Configuration Ability:
1=DM9102A able to perform Auto-negotiation
0=DM9102A not able to perform Auto-negotiation
Link Status:
1=Valid link established (for either 10Mbps or 100Mbps operation)
0=Link not established
The link status bit is implemented with a latching function, so that the
occurrence of a link failure condition causes the Link Status bit to be cleared
and remain cleared until it is read via the management interface
Jabber Detect:
1=Jabber condition detected
0=No jabber
This bit is implemented with a latching function. Jabber conditions will set this
bit unless it is cleared by a read to this register through a management
1.14
100BASE-TX
Full Duplex
1,RO/P
1.13
100BASE-TX
Half Duplex
1,RO/P
1.12
10BASE-T
Full Duplex
1,RO/P
1.11
10BASE-T
Half Duplex
1,RO/P
1.10-1.7
Reserved
0000,RO
1.6
MF Preamble
Suppression
0,RO
1.5
Auto-negotiation
Complete
0,RO
1.4
Remote Fault
0,
RO/LH
1.3
Auto-negotiation
Ability
1,RO/P
1.2
Link Status
0,RO/LL
1.1
Jabber Detect
0,
RO/LH